Abstract: An improved battery module and methods of assembly are disclosed. A battery module may include carriers for holding battery cells via interference fit. The carriers may include a busbar with a stamped fusible link between each battery cell and the busbar. The battery module may be held together via interference fit, laser welding, and friction welding. A method of assembly may electrically and mechanically connect battery cells by laser welding stamped fusible links within a busbar. The method may further enclose the battery cells within a case and create a seal between the lid and case using friction welding.